Question 1157705
One two draws w/o replacement, there are four possibilities:

RR
RW
WR
WW
<pre>
P(RR) = (3/7)(2/6) = 6/42     <<< ans (b)
P(RW) = (3/7)(4/6) = 12/42    <<< ans (a)
P(WR) = (4/7)(3/6) = 12/42
P(WW) = (4/7)(3/6) = 12/42
            total  = 42/42  (ok)

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